Hex #89cbc4 or rgb(137,203,196) in RGB space is the tint of cyan. It has hue angle of 173.64 degrees, value = 80 and saturation = 33. #89cbc4 can be obtained by mixing 4 colors: 2 drops of red, 5 drops of cyan, 1 drop of green, 5 drops of white.
Nearest safe hex - #99cccc. Below you can see the block with #89cbc4 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #89cbc4 to the mixer and play with it.